tel-number-update.php

<?php
// Get the PHP helper library from twilio.com/docs/php/install
require_once('/path/to/twilio-php/Services/Twilio.php'); // Loads the library
 
// Your Account Sid and Auth Token from twilio.com/user/account
$sid = "ACxxxxxxxxxxxx"; 
$token = "{{ auth_token }}"; 
$client = new Services_Twilio($sid, $token);
 
// Get an object from its sid. If you do not have a sid,
// check out the list resource examples on this page
$number = $client->account->incoming_phone_numbers->get("PNxxxxxxxxxxxxxxxx");
$number->update(array(
    "VoiceUrl" => "http://demo.twilio.com/docs/voice.xml",
    "SmsUrl" => "http://demo.twilio.com/docs/sms.xml"
    ));
echo $number->voice_url;